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The importance of central air conditioning water system cleaning

First, cooling water system

The central air conditioning water system is divided into cooling water and chilled water two systems. The cooling water system mainly relies on the cooling tower to dissipate heat, and the water in the cooling tower will be fully in contact with the air after the splash and activity, bringing a large number of dust, microorganisms, soluble salt and corrosive gases in the air into the cooling tower, so that the concentration of water impurities continues to increase, bringing a lot of harm to the work of the central air conditioning system.

Damage performance: dust, salt, bacteria, dissolved oxygen, etc. → scale, bacteria, algae, rust → accumulation in the host copper pipe, filter → circulation slows → poor cooling effect → poor refrigeration effect → waste power → shorten the equipment life.

Two, chilled water system

Refrigeration system is a sealed system, with the passing of time, dissolved oxygen in water is easy to form coil blockage, unit and pipeline accessories corrosion, resulting in cooling capacity attenuation and premature damage to equipment, directly affecting the normal operation of the central air conditioning system.

Damage performance: water corrodes the inner wall of the pipeline → rust occurs → block the main coil and fan coil → crack the coil or have no cooling effect → waste power → shorten the service life of the equipment.

Central air conditioning water system cleaning principle

Sterilized slime stripping: Add sterilized slime stripping agent to the circulation system to eradicate various bacteria and algae in the circulating water.

Peel off the biological mud: add the stripping agent, peel off the biological mud in the pipeline, and clean the biological mud out through circulation.

Cleaning floating rust, scale, and oil: Add chemical cleaning agent (central air conditioning work cleaning agent), clean the floating rust, scale, and oil in the pipeline system, loose discharge, and restore to a clean metal surface.

Pre-film treatment: the pre-film agent is put into the metal surface to form a fine polymeric polymer protective film to prevent corrosion.

Corrosion inhibition and scale inhibition: add corrosion inhibitor to prevent metal rust, and add scale inhibitor to prevent calcium and magnesium ion crystal deposition through a comprehensive effect. And regular sampling test, monitoring water quality.

Necessity of cleaning

After the first year of use, the energy efficiency ratio of general air conditioners attenuates by about 8%; After three years of use, the energy efficiency ratio of air conditioning products can be reduced by up to 25%. According to the survey of more than 300 star hotels in the country, the central air conditioning that works for a long time, its energy efficiency ratio attenuation can reach more than 25%, resulting in a waste of power expenditure of the use of units.

The scale in the condenser of the central air conditioning unit will lead to high pressure and increase the exhaust temperature, and the high pressure protection equipment of the unit will start, so that the central air conditioning will automatically stop. In addition, the temperature difference between cooling water and water is lower than 2 ~ 2.5℃, the heat transfer effect is poor, the cooling capacity decreases, and the power consumption increases; The cooling tower has bacteria, algae and scale generation, blocking the condenser pipeline, high pressure shutdown.

Many bad conditions of the central air conditioning, such as scale blockage in the fan coil, filter blockage, uneven air conditioning effect in the room, poor air quality, water leakage, etc., all indicate that the central air conditioning needs to be cleaned and water treatment immediately.

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Declaration: The content and template of this article are organized from the network, and the copyright belongs to the original author; If there is infringement, please inform in time and contact to delete.